The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2025
Filed:
Aug. 22, 2023
Visa International Service Association, San Francisco, CA (US);
Brian Sullivan, Amersham, GB;
Aparna Girish, Fremont, CA (US);
Mark Rigby, Rickmansworth, GB;
Christian Aabye, Redwood City, CA (US);
Mustafa Top, San Ramon, CA (US);
Yuexi Chen, Foster City, CA (US);
Dinah Sloan, San Jose, CA (US);
Hao Ngo, San Jose, CA (US);
Visa International Service Association, San Francisco, CA (US);
Abstract
A method includes forming a communication channel between a user device and an access device. The communication channel is then secured using a user device key pair in the user device and an access device ephemeral key pair in the access device. The access device then generates a session key using at least a private cryptographic key in the access device ephemeral key pair, and a public key in the user device key pair. The access device then uses the session key to secure an ultra-wideband communication channel between the user device and the access device.